Stored Cross-Site Scripting (XSS) in Note Station file upload functionality (QNAP Systems Inc. Notes Station 3)

CVE-2026-39991
MEDIUM 4.8

At a glance

Source
NVD
EPSS
EPSS 0.29 % Β· percentile 22 ()
State
PUBLISHED
Published
Updated
Assigner
qnap
NVD status
Awaiting Analysis

Description

A cross-site scripting (XSS) vulnerability has been reported to affect Notes Station 3. If a remote attacker gains a user account, they can then exploit the vulnerability to inject malicious code. We have already fixed the vulnerability in the following version: Notes Station 3 3.9.12 and later

Weaknesses (CWE)

  • CWE-79 β€” Improper Neutralization of Input During Web Page Generation

References

Scores

VersionScoreVectorScored by
CVSS 4.0MEDIUM 4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:Nqnap
CVSS 4.0MEDIUM 4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD Β· security@qnapsecurity.com.tw (Secondary)

European references

Affected products

ProductVersions
QNAP Systems Inc. Β· Notes Station 3affected 3.9.x < 3.9.12

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST β€” attribution requested
ENISA EUVDENISA β€” reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain β€” this product uses data from the NVD API but is not endorsed or certified by the NVD